Evaluation of cyclone gasifier performance for gasification of sugar cane residue—Part 2: gasification of cane trash

Gabra, Mohamed; Pettersson, Esbjörn; Backman, Rainer; Kjellström, Björn

doi:10.1016/s0961-9534(01)00044-7

Cited by 41 publications

(22 citation statements)

References 5 publications

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“…The product gas was cooled to an intermediate temperature (300-400°C), above the condensation temperature for tars, with an air to gas heat exchanger (6). The product gas was cleaned in three steps: (i) a multi-cyclone (7) separated remaining coarse particles into a bin (8), (ii) a bio-oil scrubber with RME (Rape Methyl Ester) as scrubber liquid (9) was used to remove the tars (11), and (iii) a wet electrostatic precipitator (10) where the remaining aerosols and small oil droplets were separated with electrostatic forces. The cleaned product gas can be used in a gas engine (12) coupled to a generator to produce electricity or it can be flared (13).…”

Section: Methodsmentioning

confidence: 99%

“…Therefore, the more fuel flexible a gasifier is the easier it becomes to optimize the overall process. A large number of different types of biomass gasifiers have been proposed and entrained flow gasifiers that operate like a cyclone separator have been shown to tolerate a wide range of fuels [5][6][7][8][9][10][11]. The focus of the present paper is to assess the fuel flexibility of a 500 kW th pilot cyclone gasifier with a complete gas cleaning system.…”

Section: Introductionmentioning

confidence: 99%

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Influence from fuel type on the performance of an air-blown cyclone gasifier

Risberg

Öhrman²,

Gebart

et al. 2014

Fuel

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h i g h l i g h t sPerformance of an air-blown cyclone gasifier have been investigated for different fuels. Cleaning system performance have been investigated with SMPS. Carbon conversion varied between 70% and 95% for the different fuels. Entrained flow gasification of biomass using the cyclone principle has been proposed in combination with a gas engine as a method for combined heat and power production in small to medium scale (<20 MW). This type of gasifier also has the potential to operate using ash rich fuels since the reactor temperature is lower than the ash melting temperature and the ash can be separated after being collected at the bottom of the cyclone. The purpose of this work was to assess the fuel flexibility of cyclone gasification by performing tests with five different types of fuels; torrefied spruce, peat, rice husk, bark and wood. All of the fuels were dried to below 15% moisture content and milled to a powder with a maximum particle size of around 1 mm. The experiments were carried out in a 500 kW th pilot gasifier with a 3-step gas cleaning process consisting of a multi-cyclone for removal of coarse particles, a bio-scrubber for tar removal and a wet electrostatic precipitator for removal of fine particles and droplets from the oil scrubber (aerosols). The lower heating value (LHV) of the clean producer gas was 4.09, 4.54, 4.84 and 4.57 MJ/Nm 3 for peat, rice husk, bark and wood, respectively, at a fuel load of 400 kW and an equivalence ratio of 0.27. Torrefied fuel was gasified at an equivalence ratio of 0.2 which resulted in a LHV of 5.75 MJ/Nm 3 which can be compared to 5.50 MJ/Nm 3 for wood powder that was gasified at the same equivalence ratio. A particle sampling system was designed in order to collect ultrafine particles upstream and downstream the gasifier cleaning device. The results revealed that the gas cleaning successfully removed >99.9% of the particulate matter smaller than 1 lm. a r t i c l e i n f o

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence from fuel type on the performance of an air-blown cyclone gasifier

Risberg

Öhrman²,

Gebart

et al. 2014

Fuel

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“…In a cyclone gasifier, pulverized biomass fuel is fed together with air tangentially Engineering along the inside surface of a cyclone geometry [1] [2] [3]. Partial combustion inside the cyclone gasifier generates a high temperature that results in conversion of the powder to a medium heating value gas and possibly also a small char residue.…”

Section: Introductionmentioning

confidence: 99%

Turbulence Modelling of a Single-Phase Flow Cyclone Gasifier

Jafari¹,

Hellström²,

Gebart³

2017

ENG

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The current work aims to make a foundation for an engineering design of a cyclone gasifier to be able not only to predict its flow field with a suitable accuracy but also to investigate a large number of design alternatives with limited computer resources. A good single-phase flow model that can form the basis in an Euler-Lagrange model for multi-phase flow is also necessary for modelling the reacting flow inside a cyclone gasifier. The present paper provides an objective comparison between several popular turbulence modelling options including standard k-ε and SST with curvature corrections, SSG-RSM and LES Smagorinsky models, for the single-phase flow inside cyclone separators/gasifiers that can serve as a guide for further work on the reacting multi-phase flow inside cyclone gasifiers and similar devices. A detailed comparison between the models and experimental data for the mean velocity and fluctuating parts of the velocity profiles are presented. Furthermore, the capabilities of the turbulence models to capture the physical phenomena present in a cyclone gasifier that affects the design process are investigated.

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“…Research are carried out on the use of various types of biomass in the reactors of diverse construction, among others: pine chips in a fluidized bed [10] and fixed bed reactors [11]; bark of pine, Japanese oak [12] and pomace from olive oil production [13] in a fixed bed; oak, maritime pine and eucalyptus [14] as well as wood [15] and wood pellets [16], digestate from the production of ethanol [17], almond shell [18] in the fluidized bed reactors; waste from the processing of sugar cane in the cyclone reactor [19,20]; husks of sunflower, rapeseed, pine cones, cotton waste and pomace oil in thermogravimetric analyzer [21]; animal waste compost in a two-stage fluidized bed reactor [22]. During research influence of temperature, particle size, amount of steam and air fed to the reactor, as well as the type of biomass and catalysts used on the amount and the calorific value of the resulting gas are analyzed.…”

Section: Introductionmentioning

confidence: 99%

“…The key parameter for the gasification of biomass process is temperature, which determines the composition of the resulting gas [10,15,17,20,23] and its calorific value [14]. That is why the influence of temperature on the gasification process was investigated in this paper.…”

Section: Introductionmentioning

confidence: 99%

Kinetics examination of pressurised steam gasification of beech wood

et al. 2016

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Abstract. In Poland, among all renewable energy sources, share of biomass in electricity production is the largest. Great potential in biomass utilization involves use of gasification technology. The course of biomass gasification process in steam atmosphere is the subject of numerous scientific studies. The aim of this study was kinetics examination of pressurized beech wood waste gasification, that can be successfully used in industrial gasification. Measurements were carried out on a unique laboratory installation, that allows kinetics examination of solid fuels gasification with steam at wide range of pressures, via using thermovolumetric method. Formation rates of main gaseous products were determined, moreover, composition of post-reaction gas, as well as biomass conversion degree depending on the temperature were specified. Kinetic parameters of gasification were calculated and series of kinetic models were used to their designation ie Isoconvesional method, Integrated Core Model (ICM), Grain Model (GM) and Random Pore Model (RPM).

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Evaluation of cyclone gasifier performance for gasification of sugar cane residue—Part 2: gasification of cane trash

Cited by 41 publications

References 5 publications

Influence from fuel type on the performance of an air-blown cyclone gasifier

Influence from fuel type on the performance of an air-blown cyclone gasifier

Turbulence Modelling of a Single-Phase Flow Cyclone Gasifier

Kinetics examination of pressurised steam gasification of beech wood

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